Open-source LLM router & AI cost optimizer. Routes simple prompts to cheap/local models, complex ones to premium — automatically. Drop-in OpenAI-compatible proxy for Claude Code, Codex, Cursor, OpenClaw. Saves 40-70% on AI API costs. Self-hosted, no middleman.

Winning algorithms for the SpaceNet 4: Off-Nadir Building Footprint Detection Challenge

Official code for "Learning to Extract Building Footprints from Off-Nadir Aerial Images"

The implementation of the paper "Detecting Building Changes with Off-Nadir Aerial Images"

Nadir is a Python package designed to dynamically choose the best llm for your prompt by balancing complexity and cost and response time.

Nadir BRDF Adjusted Reflectance (NBAR) for Sentinel-2 in Python

Baseline models, scripts, and helper functions for the SpaceNet 4: Off-Nadir Building Detection Challenge

Mask RCNN trained to detect buildings from the SpaceNet Off Nadir dataset

Command line Python script that 1) takes logo file, 2) converts to equirectangular image, 3) transforms to desired size, and 4) overlays on-top of an equirectangular photo as a nadir.

A node for node-red that generates events based on the position of the Sun at the appropriate time of day.

[CVPR 2026 Findings] Official repository for "From Orbit to Ground: Generative City Photogrammetry from Extreme Off-Nadir Satellite Images". Code will be released soon.

Nadir: Cutting-edge PyTorch optimizers for simplicity & composability! 🔥🚀💻

Java 11+ client for the Apex Legends API and Origin's XMPP server

Paper "Instance-Level Multitask Learning for 3D Building Extraction from Off-Nadir Satellite Imagery"

Normalizating directional SIF to nadir (or any other given viewing direction)

A 1.2.5 Minecraft utility client, designed for use on the server "nadir.2beta2t.net".

This repository contains a spacecraft attitude dynamics and control simulation and corresponding report. Satellite components such as reaction wheels, thrusters, and surfaces are emulated. Control modes such as nadir pointing, target pointing, detumble, reaction wheel desaturation, and attitude maneuvering can be simulated. Finally, this simulation takes into account all relevant environmental disturbance torques.

Simple spatial resolution calculator for nadir aerial imagery

A simple Python calculator for off-nadir (and nadir) camera resolution calculations

In-Terminal Notification Center

Super learning with flexible formulas

This repository contains the code to reproduce the article (https://doi.org/10.1007/s11119-024-10133-0). The presented method allows to extract oblique and nadir viewing angles from UAV-mounted, multispectral snapshot cameras.

This was part of Spacecraft Attitude Dynamics and Control course assignment. The task was to design a complete spacecraft ADCS. First, sun sensor, star sensor, and earth horizon sensor were employed as vector measurements. Then SVD method was used as attitude determination algorithm, and Luenberger state observer was used as filtering method. The actuator was three axis reaction wheels, where DCM-based control law was utilized as control algorithm. In this simulink model, de-tumbling and nadir pointing were performed succesfully.

Enchantments rehaul and expansion 💜

Generate Landsat-8 and Sentinel-2 NBAR (Nadir BRDF Adjusted Reflectance) product.

This Github is provides the necessary codes for data preparation, segmentation model development, and post-processing for the Multi-label segmentation of roof, footprint, and shape of buildings on off-nadir aerial images.

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This repository contains the code associated with the paper "Efficient Collocation of GNSS Radio Occultation Soundings with Passive Nadir Microwave Soundings". It also contains instructions on how to download open-source data associated with the same paper.

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A process is introduced to improve the frequency constrained unit commitment (FCUC), by using machine learning to learn the frequency nadir constraint.